102439624 has 32 divisors (see below), whose sum is σ = 226598400. Its totient is φ = 42485760.

The previous prime is 102439613. The next prime is 102439627. The reversal of 102439624 is 426934201.

It is a happy number.

It is a super-2 number, since 2×102439624² = 20987753130522752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (102439627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27769 + ... + 31240.

It is an arithmetic number, because the mean of its divisors is an integer number (7081200).

Almost surely, 2^102439624 is an apocalyptic number.

102439624 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

102439624 is an abundant number, since it is smaller than the sum of its proper divisors (124158776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102439624 is a wasteful number, since it uses less digits than its factorization.

102439624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59053 (or 59049 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 102439624 is about 10121.2461683332. The cubic root of 102439624 is about 467.9031747483.

The spelling of 102439624 in words is "one hundred two million, four hundred thirty-nine thousand, six hundred twenty-four".